shlwapi/tests: Skip if test ini file wasn't created

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=7382

Your paranoid android.


=== wvistau64 (32 bit ordinal) ===
ordinal.c:1934: Test failed: expected (L"01 \062c\0648\0627\0646, 2014") got (L"\200f01 \200f\062c\0648\0627\0646, \200f2") for date part
ordinal.c:1960: Test failed: expected (L"01 \062c\0648\0627\0646, 2014") got (L"\200f01 \200f\062c\0648\0627\0646, \200f2") for date part

=== wvistau64 (64 bit ordinal) ===
ordinal.c:1934: Test failed: expected (L"01 \062c\0648\0627\0646, 2014") got (L"\200f01 \200f\062c\0648\0627\0646, \200f2") for date part
ordinal.c:1960: Test failed: expected (L"01 \062c\0648\0627\0646, 2014") got (L"\200f01 \200f\062c\0648\0627\0646, \200f2") for date part